8ight shock oil weight?

Ok,
so I am running 8ight shocks (in my mp777) because I like to be difficult.
does anyone know what weight oil the rtr shocks come with?
I purchased the shocks from a parted out kit on ebay, and I know that my suspension is a little soft (buggy is heavy, again because I like to be difficult).
I was just wondering if anyone who runs the losi 8ight could inform me
A)what is the stock oil weight (so I know what is too soft)
B)what weight oil do you use in your 8ight? (Also how much does your buggy weight (with batteries).

Thanks for your help.

I run RTR shocks on my electric buggy with 40 wt all around with silver front and green rear springs. My car weight is 7lb 12oz ready to go.
On my nitro car it has kit shocks with 40 front and 27.5 rear with the same springs as above. It weighs 7lbs 3oz with fuel ready to go.

Thanks